//=========================================================================
// Copyright (C) 2024 The C++ Component Model(COMO) Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//=========================================================================

/**
 * Finish access to a persist memory allocator managed region.
 */

#include "pmfunction.h"
#include "pminternal.h"

void *pmalloc_detach(void *md)
{
    struct mdesc mtemp;

    if (md != nullptr) {
        mtemp = *static_cast<struct mdesc *>(md);

        if ((mtemp.morespace(&mtemp, mtemp.mempoolbase - mtemp.limitpos)) ==
                                                                      nullptr) {
            *static_cast<struct mdesc *>(md) = mtemp;
        }
        else {
            if (mtemp.flags & PMALLOC_DEVZERO) {
                close(mtemp.mappingfd);
            }
            md = nullptr;
        }
    }

    return (md);
}
